<template>
  <div
    :class="animate"
    :style="{ height: height, width: width }"
    :id="chartOption.bindingDiv"
    ref="text"
  >
    <count-to
      ref="flop"
      :style="classObject"
      :start-val="chartOption.startVal"
      :end-val="valueNum"
      :duration="chartOption.duration"
      :decimals="chartOption.decimals"
      :separator="chartOption.separator"
      :prefix="chartOption.prefix"
      :suffix="chartOption.suffix"
      :autoplay="true"
    ></count-to>
  </div>
</template>

<script>
import CountTo from "vue-count-to";

import "../../animate/animate.css";
import { parseQueryString, fIsUrL } from "../../util/urlUtil";
import { chartApiBar } from "@/api/tool/datav/chartApi";
import { websocketCommand } from "../../util/websocket.js";

export default {
  props: {
    className: {
      type: String,
      default: "chart"
    },
    width: {
      type: String,
      default: "100%"
    },
    height: {
      type: String,
      default: "100%"
    },
    chartOption: {
      type: Object
    }
  },
  components: {
    CountTo
  },
  data() {
    return {
      chart: null,
      valueNum: 0,
      timer: "",
      wsObj: null,
      wsFlag: false,
      wsTimer: "",
      wsValue: null,
      animate: this.className
    };
  },
  watch: {
    width() {},
    height() {},
    chartOption: {
      deep: true,
      handler(newVal) {
        this.$nextTick(() => {
          this.setOptions(JSON.parse(JSON.stringify(newVal)));
        });
      }
    },
    "chartOption.timeout": {
      handler() {
        this.chart = null;
        this.initChart();
      }
    },
    "chartOption.dataSourceType": {
      handler(value) {
        //切换数据源重新连接
        if (value !== "websocket") {
          this.wsFlag = false;
          //每次切换数据源恢复原来动画
          this.animate = this.className;
        }
        if (value !== "url") {
          clearTimeout(this.timer);
        } 
      }
    },
    "chartOption.interfaceKey": {
      handler(newValue, oldValue) {
        //初始化不创建连接，改变接口地址重新创建
        if (oldValue !== undefined && oldValue != "") {
          this.wsValue = null;
          this.closeWs();
          this.createWs();
          this.animate = this.className;
        }
      }
    },
    wsFlag: {
      handler(value) {
        if (!value) {
          this.wsValue = null;
          this.closeWs();
        }
      }
    },
    className: {
      handler(value) {
        this.animate = value;
      }
    }
  },
  computed: {
    classObject() {
      return {
        "font-size": `${this.chartOption.fontSize}px`,
        "font-family": this.chartOption.fontFamily,
        "font-weight": this.chartOption.fontWeight,
        color: this.chartOption.fontColor,
        "background-color": this.chartOption.backgroundColor,
        "letter-spacing": this.chartOption.letterSpacing + "px",
        display: `block`,
        margin: `10px 0`,
        "text-align":
          this.chartOption.textAlign == undefined
            ? "center"
            : this.chartOption.textAlign
      };
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart();
    });
  },
  beforeDestroy() {
    this.chart = null;
    clearTimeout(this.timer);
    if (this.wsFlag) {
      this.closeWs();
    }
  },
  methods: {
    initChart() {
      
      //判断是否开启定时器，当是访问url接口时候并且timeout不为0时候开启定时器
      if (this.timer != "") {
        clearTimeout(this.timer);
      }
      if (
        (this.chartOption.dataSourceType == 'url' || this.chartOption.dataSourceType == 'database') &&
        this.chartOption.timeout > 0
      ) {
        let timerTask = () => {
          this.setOptions(JSON.parse(JSON.stringify(this.chartOption)));
          this.timer = setTimeout(() => {
            timerTask();
          }, this.chartOption.timeout);
        };

        timerTask();
      }else{
        this.setOptions(JSON.parse(JSON.stringify(this.chartOption)));
      }
    },
    setOptions: async function(dataOption) {
      //初始化数据
      //如果不是静态数据就调用接口给staticDataValue赋值
      if (dataOption.dataSourceType == "url" || dataOption.isStaticData == false) {
        let paramJson = parseQueryString(dataOption.requestParameters);
        //let interfaceURL = 'http://localhost:8088/chart/api/bar';
        let interfaceURL = dataOption.interfaceURL;
        dataOption.staticDataValue = await chartApiBar(
          dataOption.requestMethod,
          interfaceURL,
          paramJson,
          dataOption.token
        );
      } else if (dataOption.dataSourceType == "websocket") {
        if (
          dataOption.interfaceKey != undefined &&
          dataOption.interfaceKey != ""
        ) {
          if (!this.wsFlag) {
            this.wsFlag = true;
            this.wsValue = null;
            this.createWs();
          }
          if (this.wsValue != null) {
            dataOption.staticDataValue = this.wsValue;
          }
        }
      }
      //数据处理
       if(dataOption.customData != undefined && dataOption.customData != ""){
        
        try {
          dataOption.staticDataValue = (
            
              //里面为要处理的代码块
            eval(dataOption.customData) 
            
            )(
              dataOption.staticDataValue,
              this.$refs.text
            );
          } catch (error) {
            console.log(error)
          }  
       }

       //交互组件配置
       if(dataOption.interactData != undefined && dataOption.interactData != ""){
        
        try {
          dataOption.staticDataValue = (
            
              //里面为要处理的代码块
            eval(dataOption.interactData) 
            
            )(
              dataOption.staticDataValue,
              this.$refs.text
            );
          } catch (error) {
            console.log(error)
          }  
       }


      this.valueNum = parseFloat(dataOption.staticDataValue);
      this.$refs.flop.start();
    },
    //  ws连接成功，后台返回的ws数据
    receiveMsg(e) {
      if (e.action == "chat") {
        // console.log('服务端推送',e);
        this.wsValue = JSON.parse(e.result);
        this.setOptions(JSON.parse(JSON.stringify(this.chartOption)));
      }
    },
    // 建立连接、发起ws请求，以心跳方式，向服务端发送数据
    createWs() {
      this.wsObj = new WebSocket(process.env.VUE_APP_WEBSOCKET);
      // 若为对象类型，以回调方式发送
      websocketCommand(
        this.wsObj,
        "create",
        5000,
        this.chartOption.interfaceKey,
        this.sendHeartBeat,
        this.receiveMsg,
        this.reconnectWs,
        this.wsWarning
      );
    },
    // 断网重连，需要处理的逻辑
    reconnectWs() {
      if (this.wsObj) {
        console.log("%c websocket_reconnect", "color:blue");
        this.createWs();
      }
    },
    // 以回调方式向服务端发送(对象类型的)心跳
    sendHeartBeat() {
      if (this.wsTimer != "") {
        clearTimeout(this.wsTimer);
      }

      let wsTimerTask = () => {
        console.log("发送心跳", "ping");
        let obj = { action: "keep", key: this.chartOption.interfaceKey };
        this.wsObj.send(JSON.stringify(obj));
        this.wsTimer = setTimeout(() => {
          wsTimerTask();
        }, parseInt(process.env.VUE_APP_WEBSOCKET_TIMEOUT));
        this.wsWarning();
      };

      wsTimerTask();
    },
    wsWarning() {
      //如果断开连接则显示组件警告动画并清除计数器
      if (this.wsObj.readyState == 3) {
        this.animate = "warning";
        clearTimeout(this.wsTimer);
      }
    },
    closeWs() {
      clearTimeout(this.wsTimer);
      websocketCommand(
        this.wsObj,
        "close",
        5000,
        this.chartOption.interfaceKey,
        this.sendHeartBeat,
        this.receiveMsg,
        this.reconnectWs,
        this.wsWarning
      );
      this.wsObj = null;
    }
  }
};
</script>

<style scoped></style>
